Multiple bow-shuttle



H. KLAHRE MULTIPLE BOW SHUTTLE Jul 26, 1932.

Filed m. 29, 1929 FIG. II

I l l uueo mum: INVENTOR.

A TTORNE Y.

Patented July 26, 1932 UNITED STATES PATENTi OFFICE HUGO KLAHRE, OF TEANECK, NEW JERSEY, ASSIGNOl-v TO CONSOLIDATED TRIMMING CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK MULTIPLE BOW-SHUTTLE Application filed October 29, 1929. Serial No. 403,257.

My invention relates especially to that type of shuttle employed to weave, by way of design or otherwise, ribbons, braids and other narrow goods and materials, the said type 5 being bowed in front and recessed to hold a spool of weft. This type of shuttle is also furnished with an eye at the center of the bow for the weft thread to pass through as it unrolls.

Shuttles of this type are usually formed into sets which correspond with the number of fabrics to be manufactured simultaneously, and may be placed on one level or in tiers,

but in either event all in one horizontal plane 1 Marc moved to-and-fro together across different webs by means of racks and pinions. Each shuttle has longitudinally and fixedly attached thereto a runner, the said runner being provided at its upper or under side .20 with a toothed rack. By virtue of the engagement of these racks with their respective intermittently driven pinions the shuttles receive their requisite motion.

The main object of my invention is provision for a multiple shuttle of the aforeoutlined type comprising a single frame and adjoining bobbin chambers, each particular chamber containing the identical features and elements as in the adjoining ones. Shuttles embodying my invention are especially adaptable, among the other uses to which they may be put, to those narrow fabrics such as braids, ribbons and other narrowgoods wherein adjacent threads are similar- 1y interwoven in the warp and wherein the said adiacent'threads are of the same material and color or otherwise for the formation of any certain web.

Hitherto, for the weaving of a design or web wherein adjoining threads were similarly interwoven in the warp, as many independent shuttles and operations were required. as there were 'difierential threads. Moreover, efforts have been expended already in the adaptation of asingle bobbin chamber or cavity such that two spools of weft be mounted on one spindle for the purposes as above set forth: but results have pointed to an inferior fabric.

By the utilization of my invention, a narouter edges of the runner.

upper s1de portion of runner 2 comprises. a flattened bearing surface provided at the row-ware power loom is relieved of furnishing the power necessary for propelling an undue plurality of independent shuttles arranged for the purposes asabove described, and the attendants burden is lightened by reason of the reduction of the number of independent shuttles in the set-up.

My invention comprises other details of improvement that will be more fully hereinafter set forth and pointed out in the claim.

To enable others more fully to compre hend the underlying features of my invention, a drawing depicting a preferred embodiment of my invention is annexed hereto wherein like reference characters designate C hard in structure such as boxwood or the,

like.

Rearwardly, 1 is coextensive with and integrally afiiXed to the usual runner used in conjunction with the ordinary bow-shuttle,

which is designated by numeral 2. The said runner 2 is provided at its upper side with a toothed rack 15. the latter being positioned substantially intermediate to the inner and The remaining outer part thereof with an elongated flange or projection 16, rectangular in cross section. Runner 2 is provided on the under side with a channel or groove 17. while the remaining under side portion is flattened and at right angles to the back of runner 2.

18 is a shuttle block containing the shuttle race 19, the upper boundary of the shuttle race engaging with the upper side conformation of runner 2. The lower boundary of shuttle race 19 engages with the under side conformation of runner 2. 1 1 is a inion mounted within the shuttle block 18 and is actuated by the usual mechanism (not shown) adopted in the operation of narrowware loom apparatus where a number of fabrics are manufactured simultaneously and where the respective shuttles for the various warp-thread groups are placed on one level or in tiers. Two pinions may engage a shuttle runner for purposes of stability and easy engagement of the toothed rack where the shuttle is projected through the shed of a particular group of warp threads.

It is to be noted that what constitutes the upper and under side of runner 2 usually depends upon the tier in which a particular shuttle is placed; it being appropriate in some instances for runner 2 to have its toothed rack 15 on the under side and the channel or groove 17 on the upper side; depending upon the structure of the shuttle block furnishing the respective shuttle race with its pinion or pinions for the particular shuttle.

In shuttles of the type aforeoutlined, the flattened portions of the runners are in engagement with the flattened portions of their respective shuttle races, to prevent the dropping of the shuttle noses while the shuttles are in operation. In the accompanying drawing, runner 2 is spaced from the rear wall of race 19, the contact between the said runner and the walls of the race being minimized and confined only to points where such contact is absolutely necessary.

Reference is now had to nose 1 of the shuttle comprising my invention, Fig. 1 being illustrative of a preferred form constituting two similar and adjoining bobbin chambers 13; my invention, however, being applicable to any plurality of bobbin chambers. Nose 1 has the conformation of the usual and known type of bow-shuttle as hereinbefore described, tapering gradually on both the upper and under side toward the front thereof, though the front edge of the said nose may be straight. Bobbin chambers 13 are separated one from the other by a transverse partition 21, the latter being coextensive with and integrally a part of nose 1, and these are suitably shaped as in the form shown in Fig. I of the accompanying drawing. The bobbin chambers contain identical elements and features, so that for purposes of description, reference will be had to the structure, arrangement and combination of parts subsisting in one of them.

Rings 8, 9 and 10 are spaced along the forward curved boundary of chamber 13, the rings 9 and 10 being each connected to its respective spiral spring 12 and 11, both the latter passing through conduits extending through approximately the mid-thickness of nose 1 and runner 2, the said springs accompanying drawing comprises a pressure head attached to a metallic stem, the latter being pivotally socketed in a notch on nose 1, the said notch being situated in a corner of bobbin chamber or cavity 13. 5 is a spring bearing against the metallic stem of brake 7, and is removably socketed in a recess situated in the corner opposite to the bearing .for the metallic stem of brake 7. Spring 5 furnishes the requisite tension against bob s5 bin reel 23 to give weft thread 22 the tension necessary for good feeding.

3 is a bobbin reel spindle and is journaled in chamber 13 by bearings comprising a horizontal recess on one side and a vertical notch and base therefor on the opposite side; the said bearings providing accessibility for easy and ready insertion or lifting of spindle 3 therefrom for purposes of mounting or removing bobbin reel 23. Furthermore, the nature of the bearings for spindle 3 affords assurance of prevention of spindle 3 from movement or accidental disengagement while the shuttle comprising my invention is in operative position.

6 is a flexible and resilient metallic rod which is detachably supported in appropriate recesses situated at the sides of nose 1, and for inserting it in the recesses 6 must be bowed to shorten its length. In operative 5 position the rod 6 assumes a bow shape as shown in Figs. I and III of the accompanying drawing; the rod serves as a preventive to longitudinal warping of nose 1; it also acts as a shield or guide for the warp threadsf' preventing any accidental entangling with the shuttle. 24 is a brace or curved reinforcement penetrating and placed on the upper surface of nose 1 near the bow of bobbin chamber 13 and acts as a preventive to Warping of the said portion of nose 1.

4 is an eye suitably disposed as at the center of the bow of chamber 13 and through which weft 22 passes. The position of the said eye may, however, be varied to reduce" the distance between the respective eyes of the bobbin chambers. Weft 22 as it unrolls from bobbin reel 23 passes first through ring 8, then through the rings 9 and 10, the weft 4 finally emerging from the eye 4:, This arrangement has significance in maintaining the tension of weft 22, which varies according to the rate of travel of the shuttle when the thread is strongly drawn by an increased speed of the said shuttle. A precipitate and strong pull on weft 22 will have the tendency to unduly unroll weft 22 from its bobbin reel and thus destroy the tension necessary for good feeding in spite of the opposing pressure of brake 7. The momentary contingency is met by the elongation of spiral springs 12 and 11 connected to rings 9 and 10 respectively thus affording a ration of weft sufficient to ward ofl the abovementioned tension destroying effect on the bobbin reel. Rings 8, 9 and 10 serve the ordinary and known functions in connection with the known type of bow-shuttle in addition to the function outlined above.

My invention is the only and first form known to me of a multiple bow-shuttle of the type hereinbefore mentioned wherein adjacent weft threads can be similarly inter woven in the warp and wherein the said adjacent threads are of the same material and color or otherwise for the formation of any certain web. Hitherto, for the successful weaving of a web as above described, as many independent shuttles and operations were required as there were differential threads. With my invention, operation is identical with the operation of the single bow-shuttle with the exception that the length is increased in the proportion of the number of recesses in the shuttle frame. By diminution of the distance between the respective eyes of the bobbin chambers such that the distance between the first and last eyes is less than the width of the respective warps on the narrow-ware loom, there will be the tension necessary for good feeding.

By the utilization of my invention, power is saved, time is gained, a fabric of the highest quality is produced and the number of tiers in any particular set of shuttles is reduced. My invention in the form of a twinbow-shuttle has already produced a web of the nature aforementioned possessing the finest qualities.

I wish it understood that the embodiment of my invention is solely for purposes of disclosure herein and that there is no limitation to any specific construction in the disclosure; minor changes in size, shape and arrangement of parts, variations and modifications of details may all be resorted to without departing from the spirit of my invention nor enlarging its scope within the appended claim.

Having described my invention, what I now claim as new and desire to secure by Letters Patent of the United States is:

A bow-shuttle frame of the character described comprising a runner having a longitudinal groove on one side and a toothed rack on the other side, a nose having curved sides extending forwardly from adjacent the ends of the runner and formed integrally therewith, a front integrally formed with the sides and extending longitudinally of the runner in spaced relation thereto, a plurality of bobbin containing chambers provided between the sides and front of the nose and the runner, partitions of appreciable thickness extending between the front of the nose and the runner and separating said chambers, the inner faces of the partitions corresponding to the length and curvature of the inner faces of the sides of the nose, conduits extending from corresponding points on the inner faces of the chambers through the sides of the nose and the partitions and transversely through the runner, springs mounted through said conduits and having ends affixed at the rear of the runner, rings connected to the springs within each chamber at corresponding points on the said inner faces of the partitions and sides, spindles in each of the chambers, and communicating into each chamber at a corresponding point.

In testimony whereof, I have hereunto affixed my hand this 28th day of October, 1929, a"

at 1440 Broadway, in the city, county, and State of New York.

HUGO KLAHRE. 

